[INFO] fetching crate alexcrichton-cranelift-frontend 0.53.0...
[INFO] checking alexcrichton-cranelift-frontend-0.53.0 against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] extracting crate alexcrichton-cranelift-frontend 0.53.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate alexcrichton-cranelift-frontend 0.53.0 on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alexcrichton-cranelift-frontend 0.53.0
[INFO] finished tweaking crates.io crate alexcrichton-cranelift-frontend 0.53.0
[INFO] tweaked toml for crates.io crate alexcrichton-cranelift-frontend 0.53.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 269962cf8e3f7555c221adb68a18702457eea6faf7e893bdf101bef19e3744e2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "269962cf8e3f7555c221adb68a18702457eea6faf7e893bdf101bef19e3744e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "269962cf8e3f7555c221adb68a18702457eea6faf7e893bdf101bef19e3744e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "269962cf8e3f7555c221adb68a18702457eea6faf7e893bdf101bef19e3744e2", kill_on_drop: false }`
[INFO] [stdout] 269962cf8e3f7555c221adb68a18702457eea6faf7e893bdf101bef19e3744e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c05a2e660b0fe36c7b33b4521fc7f6bb3d50c4aa7474a71aa372e525a5323a8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0c05a2e660b0fe36c7b33b4521fc7f6bb3d50c4aa7474a71aa372e525a5323a8", kill_on_drop: false }`
[INFO] [stderr]     Checking alexcrichton-cranelift-codegen v0.53.0
[INFO] [stderr]     Checking alexcrichton-cranelift-frontend v0.53.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1139:24
[INFO] [stdout]      |
[INFO] [stdout] 1139 |                 panic!(_errors);
[INFO] [stdout]      |                        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1139 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1139 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1318:24
[INFO] [stdout]      |
[INFO] [stdout] 1318 |                 panic!(_errors);
[INFO] [stdout]      |                        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1318 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1318 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1369:24
[INFO] [stdout]      |
[INFO] [stdout] 1369 |                 panic!(_errors);
[INFO] [stdout]      |                        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1369 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1369 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.94s
[INFO] running `Command { std: "docker" "inspect" "0c05a2e660b0fe36c7b33b4521fc7f6bb3d50c4aa7474a71aa372e525a5323a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c05a2e660b0fe36c7b33b4521fc7f6bb3d50c4aa7474a71aa372e525a5323a8", kill_on_drop: false }`
[INFO] [stdout] 0c05a2e660b0fe36c7b33b4521fc7f6bb3d50c4aa7474a71aa372e525a5323a8